Improvement in heating-drums



F. PBOUDFOOT. Heating-Drum.

Paten'tedfeb. 16,1875.

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THE GRAPHIC CO-PHOTQ'LITH-GS R41 PARK PLACEJLY:

FREDERICK PBOUDFOOT, OF TORONTO, CANADA.

IMPROVEMENT IN HEATING-DRUMS.

Specification forming part of Letters Patent No. 159,966, dated February16, 1875 application filed December 18, 1874.

T 0 all whom it may concern:

Be it known that I, FREDERICK PROUD- FOOT, of the city of Toronto, inthe county of York, in the Province of Ontario, Canada, have inventedcertain new and useful Improvements in Drum-Heaters and I do herebydeclare that the following is a full, clear, and exact description ofthe same.

This invention relates to improvements in that class of drum-heatershaving an inner and an outer drum, the intervening space forming thesmoke-passage; and it consists in suspending the inner drum within theouter drum by direct contact of the walls at one or more places, bothdrums being correspondingly perforated at the part or parts of contact,to afford air circulation through the inner drum, the objects being tocause greater radiation of heat, to give durability to the construction,simplify and cheapen the cost of manufacture, and to admit of the innerdrum to contain Water for evaporation.

Figure 1 is an elevation of my drum, onehalf shown in vertical section.Fig. 2 is a horizontal section of the drum. Fig. 3 is a half-section,half-elevation, of a drum of modified arrangement. Fig. 4 is ahorizontal section of the same.

A is the outer, and B the inner, drum, the latter held suspendedlywithin the former by one or more portions of the side walls being incontact and fixedly held by rivets or other means. At the junction ofthe side walls suitable perforations O are made in both drums, to causea through circulation of air in the drum B. The cold air entering by oneaperture becomes heated and passes out through another aperture into theapartment to be warmed. The inner drum has a tight bottom to hold waterfor evaporating purposes, the vapor passing into the room with theheated air. The outer drum is connected to a stove or stove-pipe in theordinary way, by telescoping with the collars F at top and bot= tom ofthe drum, and in such collars may be placed a damper, G, if desired. Thesmoke passes between the drums A and B, in the di rection indicated bythe feathered arrows, the plain arrows indicating the course of the air.Fig. 3 shows a portion of the top of the outer drum perforated, andconnected with the inner drum by a short tube, through which the heatedair passes, the contact of the walls of the drums A B being at one endonly. Fig. 1 shows the points of contact to be at two opposite sides.

I claim as my invention- 1. As an improvement in drum-heaters, and incombination with a smokepipe, F,the outer drum A and inner drum B,having perforations 0 at the rear and front sides of said drums for thepassage of air wholly through the inner drum B, said drum B having awater-tight bottom for the reception of water, and attached contiguouslyto opposite sides of the outer drum A, the smoke-space of the outer drumextending over the ends of the inner drum, as and for the purpose setforth.

2. In combination with smoke-pipe F, and outer drum A, and inner drum B,having Water-tight bottom and perforations G, the per forated cappedpassage H, extending upwardly from the inner ,drurn through the outerdrum, for the passage of air solely within the inner drum, as and forthe purpose set forth.

F. PBOUDFOOT. Witnesses J. A. DAVIS,

18S McG'ill St, Montreal. JAMES G. DAY,

188 McGt'll St, Montreal.

